Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Silicon Induces Salt Stress Amelioration in Sunflower Plants by Improving Photosynthetic Pigments and Mineral Status

Alexander Calero Hurtado
* ORCID logo ,
Denise Aparecida Chiconato
,
Gilmar da Silveira Sousa Junior
,
Renato de Mello Prado
ORCID logo ,
Kolima Peña Calzada
ORCID logo ,
Dilier Olivera Viciedo
Version 1 : Received: 19 October 2024 / Approved: 19 October 2024 / Online: 21 October 2024 (11:54:16 CEST)

How to cite: Calero Hurtado, A.; Aparecida Chiconato, D.; Sousa Junior, G. D. S.; Prado, R. D. M.; Peña Calzada, K.; Olivera Viciedo, D. Silicon Induces Salt Stress Amelioration in Sunflower Plants by Improving Photosynthetic Pigments and Mineral Status. Preprints 2024, 2024101532. https://doi.org/10.20944/preprints202410.1532.v1 Calero Hurtado, A.; Aparecida Chiconato, D.; Sousa Junior, G. D. S.; Prado, R. D. M.; Peña Calzada, K.; Olivera Viciedo, D. Silicon Induces Salt Stress Amelioration in Sunflower Plants by Improving Photosynthetic Pigments and Mineral Status. Preprints 2024, 2024101532. https://doi.org/10.20944/preprints202410.1532.v1

Abstract

This research aimed to explore the effects of Silicon (Si) on managing hydrogen peroxide levels, photosynthetic pigment content, nutrient accumulation, and the production of root and shoot dry biomass in salt-stressed sunflower (Helianthus annuus L.) plants. Conducted in a glasshouse, the experiment followed a completely randomized block design in a factorial arrangement (2 × 2) and five replicates. Pots were divided into two groups: non-salt stressed, and salt stressed (100 mM NaCl), both with Si (2 mM as stabilized sodium and potassium silicate) and without Si. The study found that Si effectively reduced hydrogen peroxide concentration and enhanced photosynthetic pigments, nutrient status, and plant growth. The results showed that Si alleviated salt stress effects in sunflower plants by significantly lowering hydrogen peroxide levels and increasing photosynthetic pigments and nutrient accumulation, leading to greater root and shoot dry biomass. These findings indicate that adding Si to the growth medium is crucial for enhancing resistance to salt-induced ionic and osmotic stress, making it a promising strategy for improving crop growth and management in saline conditions.

Keywords

Helianthus annus; ionic stress; productivity; osmotic stress; salinity; Silicon

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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